Electric switch.



' A. s. LYHNE.

ELECTRIC SWITCH;

.APBLIOATIOH nun SEPT. 10, 1913.

H n. 8 U m, a u 2 A t WITNESSES:

all whom it may concern;

' .-.p'articula-rly adapted for,

STATES P TEn osrron- I limgnn sQ XI NE,or mmenron'r, connncrxoor.

-Emernro swi'ron.

. 11212377. I v H" Y 7 Application filed September 1 Be it lmow-n that I, ANKER S.LY,H Nn, a

citizen. of the United Sthtes,--- res'idingat fifidgeportfcounty of airfield, State of l Connecticut, -:have -invented an Improvement in Electric Switches,

' l In 'order to accomplish these requirements in the simplest manner possible, I have devised the novel circuit closing and opening device which I will now describe,

referring forming aflpart'of this specification and using reference characters to indicate the several parts. p

Figure 1 is an elevation partly broken away, showing theinvention as applied to an ordinary pocket-light, the clrcuit being open Fig. 2 a similar view showing the so .circuit closed; Fig. 3 aninvertedplan view of the contact plate, the 'casebeing in seetion;-Fig. 4 aplan View. showing the head of the sliding stud, and the contact pin providedwith a head; Fig. .5 a similar view showing a variant forn'i'p'f stop for the slid- I ing stud; FigLG an elevation partly broken away showing the invention applied to a tubular lamp; Fig. '7 ardetail 'QlGVfltlOl'l of the circuit controlling device as applied toa tubular lamp; Fig. 831 plan view correa spending. therewith, and Fig. 9 is 'a slmilar view in which the head of the contact pin is omitted. Fig. .10 is a fragmentary sec-,

'tional ,view corresponding to Fig. 2 -a 4 5 showing'a modification. r

10 denotes the case, 11 the battery, 12 'minals andl l'the I and 13 the battery te .;lamp which engages a threaded socket 15 ordinarily formed integral withv the case.

In theform illustrated in Figs. 1 to 5, in-

the circuit is closed by means of a 16 carried by a substantially tact spring 17 rigidly secured at one end to the inner side of the case. The contact pin may or may not be provided with ahead 18 by which it may be elusive,

contact pm, straight con Specification of Letters Patent.

to the accompanying drawing Patented Dec. 29, 1914. 10, 1913. Serial n 789,081

I placed in engagement with battery terminal 12 to close the circuit in the usual manner.

An important feature of the presentinvention consists in providing the contact spring gagedby the rounded end of a slide or sliding stud 20. Said recess may be in the form Figs. 1 and- 2,

or of a depression 19, as shown in Fig.

10. This stud is provided with an external head 21 and under the head: with a neck 22 which engages a slot 23 in a substantially rigid inclined guide 2& preferably formed by strikingup the with a recess which is normally enof a holeor perforation 19, as shown in,

. metal of the case. The guide 24 is arranged f I at an angle to the length of the spring 17 f and is inclined toward the free end thereof. In order'to limit the forward movement of the sliding stud, suitable stops are. pro vided as by/partly closing the lower end ofthe slot a at 25 in Fig. 4, or by striking a up bumps a the lower end of the inchiaie asat2(3inFig.5.v

In the-form illustrated in Figs. 6, 7 and. 8, the invention is shown as applied to a tubular lamp. The contact spring27 liesoutside the case which is made of insulating material and is indicated by 28. The contact spring preferably carries a contactpinv 16 as before and this pin may or may-not be provided wi a head 18. spring is inclos d in'a housing 29 which The contact is rigidly secured to the case and is -provvided with an incline 24, slot 23, and'-sliding stud 20 having a head 21, as"befo're.-,.v 30 denotes an electrical connection extending to the lamp and 31 an electrical connection extending to the battery. These connectio'ns are rigidly secured to the case, connection 30 by means of a rivet 32, the outer land of which is in posit'ion to be engaged f the contact pin and. connection 31 by wmcan's 'of a rivet 33, which may also secure the housing to the case.

InFig. 9, the head of the contact pin is omitted, it being understood of course that. the head of the contact pin may be omitted in the other form as well. In this form, for

conveniencein assembling the sliding stud, cuts are made in the'metal-of .either the housing or the case at the lowerend of the slot leaving a tongue 34 attached at the end pposite the slot; This tongue is simply gprung downward to permit the insertion of a sliding stud and is then sprung back to place leaving the stud in the slot, the

lower end of the slot serving as a stop for the sliding stud.

The operation which is the same in all of the forms is as follows: The rounded end of the sliding stud normally engages the hole or depression in the contact spring. To close the circuit, the operator presses against the head of the sliding stud and forces it out of the hole or depression and causes the stud to slide down the incline, bending the spring and forcing the contact pin, into engagement with either battery terminal 12 as in the first form, or with a rivet securing an electrical connection as in the second form. The circuit will remain closed so long as the sliding stud remains at the lower endof the incline, as in Fig. 2. To open the circuit, the sliding stud is moved from the position'shown in Fig. 2' to the position shown in the other views, which permits the contact spring to return to its normalposition and draw the 1 siofi, so that the remainder of the closing contact pin outo't' engagement with a battery terminal of an electrical connection. By providing the hole or depression 'in the contact'spring, which is normally engaged by the sliding stud, the sliding'stud is caused to more the contact springand contact pin part Way toward the closing position, in passing out of the hole or depresmovement of the contact spring, and con tact pin may be effected by a relatively short movement of the sliding stud, it' being an important feature of the invention that the 5 opening and closingof the circuit is effected by a relatively short movement. It

is Wholly immaterial so far as the present invention is concerned whether or not the contact pin is provided with a head, for 40 the reason that the sliding stud acts on the contact'plate which carries the contact ,pin and has no cooperation with the head of the contact pin.

Having thusdescribed my invention I claim:

In a device of the character described, the combination with a substantially straight contact spring, of a substantially rigid guide arranged at an angle to the ANKER S. LYHNE.

Witnesses SADIE REroI-I, 'G. (J. FULLMns 

